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A DW Venn Diagram
The post A DW Venn Diagram appeared first on Fighting Bad Data Modeling.
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Why You Need to Stop Worrying about UPDATE Statements
There seems to be a myth perpetuated out there in the database community that UPDATE statements are somehow “bad” and should be avoided in data warehouses. Let us have a look at the facts for a moment...
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Kejser’s Law
When speaking at conferences, I often get asked questions about virtualization and how fast databases will run on it (and even if they are “supported” on virtualised systems). This is complex question...
View ArticleThe Data Vault vs. Kimball
Here we go again, the discussion about the claimed benefits of the Data Vault. Thomas Christensen has written some great blog posts about his take on the Vault method. Dan Linstedt has been commenting....
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Why “Date BETWEEN FromDate AND ToDate” is a dangerous join criteria
I have been meaning to write this blog post for some time and the discussion about Data Vault finally prompted me to do it. Sometimes, you find yourself in situations where you have to join a table...
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The Information Staircase
With the Big Data wave rolling over us these days, it seems everyone is trying to wrap their heads around how these new components fit into the overall information architecture of the enterprise. Not...
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Modeling Dimensions with History Tracked, Generic Attributes
Sometimes, you need to model a database in such a way that you can dynamically extend the model without altering any tables. Perhaps the attributes changes faster than you can add new columns or the...
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What is the Best Sort Order for a Column Store?
As hinted at in my post about how column stores work, the compression you achieve will depend on how many repetitions (or “runs”) exist in the data for the sort order that is used when the index is...
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The Curse of Self-Service
These days, we seem to be high on data and data related trends. My opinion on Big Data should be well known to my readers: it is something that has to be carefully managed and largely a fad for all but...
View ArticleSELECT INTO – Moving Data From A to B
When building a data warehouse, you often find yourself needing to move data that is the result of a query into a new table. In SQL Server, there are two way to do this efficiently: SELECT INTO INSERT...
View ArticleMy Courses–Last Chance!
I am currently working on a large project that will be taking up all my time. Because of this, I will no longer find the time to run my courses. If you want to attend my data warehousing or tuning...
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Don’t Become a One trick Architect
We are near the dawn of a new workload: BigData. While some people say that “it is always darkest just before the dawn”. I beg to differ: I think it is darkest just before it goes pitch black. Have a...
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A DW Venn Diagram
The post A DW Venn Diagram appeared first on Fighting Bad Data Modeling.
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